Type-writer.



(I, W. BAMBERGER.

TYPE WRITER.

APPLICATION IILED nov.2s,19o9.

987,103. Patented Man 21, 1911.

2 SHEETS SHEET 1.

3 WWW\ J. W. BAMEERGER.

' TYPE WRITER. APPLICATION 31min NOV. 26, 1909.

Patented Mar. 21, 191i 2 SHBETSSHEET 2.

m mmwm as y rack'fi' andpiniod-(i to UNITED S ATES PATENT OFFICE.

v JUSTIN W. BAMBERGER,

or BERLIN, GERMANY.

TYPE-WRITER.

Specification of Letters Patent. P t t d'M 21, 1911;

Application filed November 26, 1909. Serial No. 529,968.

To all whom it may concern:

Be it known that I, JUSTIN W'xnman BAM- snnesa, a citizen of Germany, residing at Berlin, Germany, Berlin-Wihnersdori, Hohenzollerndamm 12,- have invented certain new and useful Improvements in Type 'Writers; and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to a typewheel key-board type-writer with visible writing which is simple in design and therefore inexpensive, but yet of solid construc tion.

.R-eference b'eing had to the accompanying drawings, Figure 1 is a sectional view of the typewriter according to the present invention. Fig. 2a plan view; Fig. 3 shows the toothed slide with-the arresting device; Fig. at the paper-carriage escapement; Fig. 5 the toothed slide with the .key levers in section; Fig. 7 is another form-oi. construction of the toothed slide for the universal keyboard shown in plan view in Fig. 6.-

As maybe seen by reference.- to Figs. 1

and 2 the key levers 1 and '2 are pivoted on a common axis or shaft .3 at the rear of the typewriter frame. The single key-levers are kept equidistant by and can move vertically in the slits of a piece 27 at the front of the machine.

The adjustment of the type-wheel is attained through-the medium of a, toothed slide 4 (Figs. 1 and 5) having teeth with position.

difierently slanting sides, arranged on a base-piece 13, having angular longitudinal rooves on each side, as shown in Fig. 1 and being slidin-gly adjustable on balls between the two guide surfaces let of the frame ofthe typewriter, said guide-surfaces forming longitudinal grooves angular in cross-section, also as shown in Fig. 1. When a typelever is pressed down it glides along the slanting side [of tooth, thus causing the slide to move laterally a distance 'corre ipon'ding to the angle of slant, as shown in ig. 5. -With the el-p-of, for instance,'-2O key-levers, said toothed slide can he moved to 10 difierent positions on-the left side (in Fig. -5,+1,+2 etc.) and to 10 different positions onthe-right (as indicated by-1,292 j tc) These movements f th 113 ga -J transfer-red through the rilediu'fn 1,,

the type-wheel 8,"s'aid pinion being arranged on the shaft 7 of the type-wheel. Thus whenever a t ype-lever is pressed down, the type-wheel is rotated through a certain angle, corresponding to the position on the type-wheel of the appertaining letter or character. hen the. typelever has reached the bottom of the space between the teeth of the slide 4 it enters a small vertical slit (Fig. 5) and at the same time the bar 9 common to all key-levers is pressed so far down that it. abuts against the projection 10 of the type-wheel bearing 11 Said bearing 11 is pivoted at 12 in the axls of engagement of rack 5 and pinion'ti, so that the bar 9 will cause it to swing over against the paper cylinder-27.-

By referring to Figsjl and 2 of the drawing, it will be noted that the-longitudinally slidable shaft 7 of the type-wheel 8 extends between two keys] of the keyboard and that it is pivoted at a point below the lowermost keys of the said key-board." This construction makes a very convenient ,a'r-

rangelnent and one in which the said drum and the parts on which it is mounted will: not in any way interfere with the keyboard.

An essential feature, of. this. typewriter is also the device by which the toothed slide and the type-wheel are returned to their-initial positions after release of the type-lever in such a manner that said toothed slide is arrested almost instantaneously in the middle and soconnected that when one lever is This is attained bymeans of the knee-levers 15 and-16 arranged below.

pushed toward-one side by a pin 28 of'the toothed slide, ward the opposite side. levers is connected with a manner that both ,leversl always'liave the tendency to assume the. nor1nal osition shown in Fig.

One oftlies'e knee.

for instance, as shown in' the other lever will swing-to aspring'18 insuch,

3. The connectionfd .le-j

vers 15 and 16 can be made in difiere'rit ways:

a'jslit of the solarlever-liffifnow the; toothed slide moves to men es manage-'- towai'dtheleft',the' pin- 28? will upper: p'art of the knee lever' -15 alsowine to ,the opposite side. As soon as, the

pushithe" ke the slit utitlidbflfidiivofttli 's'p'iice' between two teeth thef toothed slide Isa-drawn by the action 0 the spring-1:8 into-- its middleposition, atid-t-heret "kne l.vei l lbs 'left', the lever 16 at the same'tihie -s'xviiiging printthe proper character is greatly facilitated.

18 coming from the opposite side will hit against the pin 28 and arrest the toothed slide practically instantaneously.

The paper carriage, as in all type-writers, is provided with a toothed bar 20 (Figs. 1 and 4), engaging with an. escapement device 21, consistin essentially of two swinging detents. Tlns escapement 21 is in the present form of construction mounted directly on the axis 3-of the bar 9 (Fig. 1), so that every time the bar 9 is. ressed down the paper carriage will be s iftedforward. This axis 3 can also, as already mentioned, serve as an axis .or bearin for the key-levers 1 and 2. If. the mac ine is rovide'd with from 20 to 22 keys, the type-w ieel will advantageously be provided, as shown in F 1g. 1 with four separate rings of types, and it must therefore be adjustable to four different heights.

The uppermost ring of types ma convenientlyoontain the most usual sma letters, the second ring the most usual capitals, the third ring the more rarely used small letters and capitals and the numerals, and the fourth ring the signs of punctuation etc.

For adjustm the type wheel to the necessary'four. di erent heights the three shift keys 22, 23, 24 (Fig. "2) are provided,which can be ressed down varying distances and thus ad ust' the. type-wheel axis to different heights through the medium of the lever 26 pivoted at 25. This system of shift keys will be especially practical and convenient in use if said k'eys 22, 23, 24 are arranged in ositions corresponding to the relative positions of the characters on the type-keys,-

for instance, in the form of a triangle, as

shown in Fig. 2. By'thus making the shiftkeys correspond in number and m arrange ment to the characters on the type-kc s, thework of selecting the proper shiftey to As already ment1oned, Fig.. 7 represents another form of construction of the toothed slide,- for use with the normal three-row key board- (Fig. 6) with which most typewriters are at present fitted. -Here three type-levers are united to a group, being equidistant from one another, .and also the several groups are arranged at e ual distances'from one another, so that w ien the sin le type-levers are synimetncally elongate the'symmetrical normalkeyboard shown in Fig. *6wi1l ensue. It Wlll.

be obvious that the slanting sides of the teeth must be so arranged that the single levers when pressed down will shift the slide the corresponding distances, as shown in Both'in the arran ement shown 1n .Fig. 5 and in Fig.7 it will be observed thatthe key levers are arranged over the serrated,

slide tin groups, and in such a way that ward] ke levers, a t

each group is arranged partly over one and partly over the adjoining ,recess, and so that the sum of the horizontal distances to the apex of the recess from two keys of adjoining groups and arranged over such re-' cess, is equal to the sum of the horizontal distances from the corresponding keys of any other two adjoining groups to the apex of the recess over which thev are located.

What I claim as my invention and desire to secure by Letters Patent, is:

, 1. In a type-wheel typewriter, a pivotedbearing having a projection, and a type wheel journaled in said bearing, in combination with a key' lever and connections between said key lever and the type-wheel for rotating said type-wheel, and a bar arranged in the path of the'key and at some distance away from the projection on the pivoted bearing and adapted to engage the projection and rock the hearing at the end of its downward movement.

2. In a' type-wheel typewriter, a pivoted bearing having a projection and a typewheel journaled in said bearing and PIOVId' ed with a pinion, in combination with a series of key levers and a slide haying difierently inclined edges arranged below the key levers, a rack connected with saidLslid'e and engaging the' pinion,'a transverse. bar arranged below the key-levers and some distance above the pro ection onthe pivoted bearing, whereby the. depression of the key lever first rotates the type-wheel through a corresponding angle and then causes the said type-wheel to be rocked.

3. In atype-wheel typewriter, a series of key-levers and a'type-wh'eel, a shaft supporting said type-wheel and extending upconnections between the key-levers and the type-wheel for rotating the same, in combi-' nation with a bearing supporting said shaft ivoted at a point below the keys ofthe keyevers and provided with a'project-ion, a bar "arranged in.the path of the keys and nor between two of the key-levers, and

mally some distance above the projection on thepivoted bearing.

4. In atype-wheel typewriter, a series of key levers, a type-wheel, a shaft supporting said wheel, a rack and inion driving connection between the key evers and the shaft, a tubular bearing forsaid shaft pivoted in line transversely with the plane of the pinionandprovided with .a projection, and a bar arranged in the path of the keys and normally some distance above the projection on the bearing.

5. In a type-wheel typewriter, a series of e-wheel, a shaft supporting said wheel, a drlving connection between the key levers and the. shaft,'a' bearing-for the shaft pivoted substantially-in a plane including the driving connection an perpendicular to the shaft, the bearing provided with a projection adjacent its pivotal point, and a universal bar arranged when actuated by the key levers to impinge upon the proect1on.

6. In a ,typewvheel typewriter, a typewheel provided With means for rotating the same inopposite directions, in combination with a slide connected to said means and provided with inclined edgesforming angular recesses between each pair of said edges, and key-levers arranged in groups, each group being arranged partly over one and.

partly over the adjoining recess, the sum of the horizontal distances to'the apex of the recess trom two keys of ad o1n1ng groups arranged over said recess being equal to the sum of the horizontal distances from the corresponding keys of anysother't-Wo adjoining groups to the apex'of the recess over which they are located.

v7. In a type-wheel typewriter, a slide for rotating the type-wheel and provided with a. stop-pin,'in combination with means for displacing the slide longitudinally, a lever yieldingly held against the stop pin at one side, and a second lever connected to the first lever and movable away from or toward the normal position of said pin as the first lever moveshtowa rd or away from the same.

8.111 a type-wheel typewriter, a slide for rotating the type-Wheel in opposite direc tions and provided with a stop in, in combination with means for displacing the slide longitudinally in-either direction, an elbow lever pivoted to a fixed part of the typewriter, one arm of the same bearing yieldingly against the stop-pin and a second elbow lever also pivoted to the fixed part of the typewriter and also bearing yieldingly against the stop pin, the other arms of said leversbeing connected by a pin. and slot connection.

In testimony whereof I hereunto afiix my signature in the presence of two Witnesses.

JUSTIN W. BAMBERGER.

Witnesses: v

ENRY HAsPER, WOLDEMAR HAUPT. 

